The operational amplifier of this circuit can be the 741. The circuit has very low consumption and can be powered by two 9-B batteries. Low voltage amplifiers can be used.
The circuits shown in figure 2 are suggested by Texas Instruments (www.ti.com) make use of the...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...
This 9 + 9 V symmetrical power supply was obtained in a 1977 symmetric publication but can still be...